Financial services
Multicloud migration with a zero-downtime window
Critical transactional platform in an owned data center, with the infrastructure contract expiring and board pressure for cost predictability.
- downtime window
- 0downtime window
- migration waves
- 3migration waves
- infrastructure cost
- -30%infrastructure cost
ScaleThree migration waves run with the internal team.
Challenge
Rising cost, difficulty scaling at peaks and dependency on a single infrastructure vendor.
Complexity
No acceptable downtime window, regulated data and strong coupling between components built over more than a decade.
ÀFÒNJÁ's role
Technical direction of the migration and advisory to technology leadership, with execution run alongside the internal team.
Approach
Architecture and cost assessment, landing zone design, wave-based migration with data replication and rehearsed cutovers, followed by assisted operation.
Key decisions
- Domain-by-domain migration waves, no big bang
- Landing zone with environment isolation and regulatory controls by design
- Data replication with a rehearsed cutover before each wave
- Decoupling of critical components before moving workloads
- Cost model per domain, with continuous FinOps from day one
What changed structurally
Infrastructure stopped being a growth constraint: capacity became a business decision, and cost gained an owner and a monthly reading.